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KK74LS157N Datasheet(PDF) 3 Page - KODENSHI_AUK CORP. |
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KK74LS157N Datasheet(HTML) 3 Page - KODENSHI_AUK CORP. |
3 / 4 page KK74LS157 AC ELECTRICAL CHARACTERISTICS (TA=25°C, VCC = 5.0 V, CL = 15 pF, RL = 2 kΩ, tr =15 ns, tf = 6.0 ns) Symbol Parameter Min Max Unit tPLH Propagation Delay, Input A or B to Output Y 14 ns tPHL Propagation Delay, Input A or B to Output Y 14 ns tPLH Propagation Delay, Select to Output Y 23 ns tPHL Propagation Delay, Select to Output Y 27 ns tPLH Propagation Delay, Output Enable to Output Y 20 ns tPHL Propagation Delay, Output Enable to Output Y 21 ns Figure 1. Switching Waveforms Figure 2. Switching Waveforms NOTES A. CL includes probe and jig capacitance. B. All diodes are 1N916 or 1N3064. Figure 3. Test Circuit 3 |
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